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Cu(s) | Cu2+(aq) K+(aq) | K(s)

-3.27

Zn(s) | Zn2+(aq) Na+(aq) | Na(s)

-1.95

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15y ago

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The voltage measured across a dry cell is the total voltage output of the cell, typically around 1.5 volts. When three bulbs are connected in series, the total voltage drop across the bulbs will be the same as the voltage output of the dry cell. So, the voltage measured across the dry cell is equal to the voltage drop measured across the three bulbs in series.


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